Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

5.1.7 Invalid sender address syntax when asking for notification

  • 2 antwoorde
  • 1 het hierdie probleem
  • 1 view
  • Laaste antwoord deur user1366614

more options

when sending mail with notication to provider KPN I get an 5.1.7 Invalid sender address syntax when sending without notification of recieving no problems what to do?

when sending mail with notication to provider KPN I get an 5.1.7 Invalid sender address syntax when sending without notification of recieving no problems what to do?

Gekose oplossing

I heard about an undocumented solution: using mail.planet.nl, port 25, ssl, no username (!) all working again

Lees dié antwoord in konteks 👍 0

All Replies (2)

more options

and I checked my sent mail header looking at the source of the message: there is no "Return-Receipt-To" ??? From - Mon Dec 12 06:22:20 2016 X-Mozilla-Status: 0001 X-Mozilla-Status2: 00800000 X-Mozilla-Keys: To: [email protected] From: bbb <[email protected]> Subject: test Message-ID: <[email protected]> Date: Mon, 12 Dec 2016 06:22:19 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:45.0) Gecko/20100101

Thunderbird/45.5.1

MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit

more options

Gekose oplossing

I heard about an undocumented solution: using mail.planet.nl, port 25, ssl, no username (!) all working again